Is there a good Android app that lets me use my phone as a video monitor for my RC drone?

RC FPV is an app designed to function as a ground station display for first-person-view (FPV) radio-controlled aircraft and drones. It serves users who want to utilize an Android phone or tablet as a monitor, eliminating the need for a dedicated screen. The app connects to external USB video capture devices that are plugged into standard 5.8GHz analog video receivers, displaying the live feed with minimal latency. This setup is common for budget-conscious drone enthusiasts or as a backup display. Specific features include configurable on-screen displays (OSD) for battery voltage and timer data, video recording capability, and support for multiple aspect ratios. The interface allows for manual channel scanning to find the clearest signal from the drone's video transmitter. For hobbyists who already own a compatible USB capture dongle, this app provides a functional, portable monitoring solution. However, reviews indicate that performance heavily depends on the quality of the external hardware and the device's own processing power. Some users report the interface feeling slightly dated, and initial setup requires understanding of FPV equipment connections. It’s a practical tool for a specific niche, offering a repurpose for old tablets, but it isn't a plug-and-play solution for complete beginners without the necessary external gear.